Dust collecting unit of vacuum cleaner

• US 20060200934A1
• Filed: 04/25/2006
• Published: 09/14/2006
• Est. Priority Date: 05/10/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Go, Il-Gyeong, Min, Young-Gun
• Granted Patent: US 7,409,744 B2
• Time in Patent Office: Days
• US Class Current: 15/353
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A dust collecting unit for a vacuum cleaner is provided. The dust collecting unit includes a dust separating chamber with an air inlet formed on an outer surface thereof and an air outlet formed on one side thereof, a main dust collecting chamber formed in the dust separating chamber for separating dust and dirt in a cyclonic fashion, an auxiliary dust collecting chamber formed at one side of the main dust collecting chamber, and a partition plate for partitioning the main dust collecting chamber. The dust collecting unit allows an amount of air sucked and the efficiency of collecting dust and dirt to be greatly increased.

Claims

1. A dust collecting unit for a vacuum cleaner, comprising:

a dust separating chamber with an air inlet formed tangentially on an outer surface of a wall forming the dust separating chamber;

a main dust collecting chamber for collecting dust;

an auxiliary dust collecting chamber, wherein the dust separating chamber and the auxiliary dust collecting chamber communicate through an opening formed on a mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber, and wherein the opening is formed on an upper part of the mutual wall near the top of the dust separating chamber; and

a cover which is mountable to a top of the dust separating chamber.

2. The dust collecting unit of claim 1, wherein the main dust collecting chamber and the auxiliary dust collecting chamber communicate through an opening formed on a mutual wall separating the main dust collecting chamber from the auxiliary dust collecting chamber.

3. The dust collecting unit of claim 2, wherein the mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber and the mutual wall separating the main dust collecting chamber from the auxiliary dust collecting chamber are parts of a same boundary wall.

4. The dust collecting unit of claim 1, wherein the mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber is curved.

5. The dust collecting unit of claim 1, wherein the cover is configured to be detachable and to cover both an opened end of the dust separating chamber and a first opened end of the auxiliary dust collecting chamber.

6. The dust collecting unit of claim 5, further comprising an outlet formed in the detachable cover, and a fine dust filter positioned on the cover to extend within the dust separating chamber.

7. The dust collecting unit of claim 1, further comprising a hinged cover configured to cover both an opened end of the main dust collecting chamber and a second opened end of the auxiliary dust collecting chamber.

8. A dust collecting unit for a vacuum cleaner, comprising:

a cylindrical first chamber adapted to separate dust from air by cyclonic action;

a cylindrical second chamber communicating with the first chamber and adapted to collect dust separated in the first chamber; and

a third chamber communicating with both the first and second chambers and adapted to collect dust from both the first and second chambers.

9. The dust collecting unit from claim 8, further comprising a circular mutual wall that separates the first chamber from the second chamber.

10. The dust collecting unit of claim 9, further comprising a communication hole that is formed in the mutual wall.

11. The dust collecting unit of claim 8, further comprising a curved mutual wall that separates both the first and second chambers from the third chamber.

12. The dust collecting unit of claim 11, farther comprising communication holes, each of which is formed in the curved mutual wall, and wherein the communication holes are formed between the third chamber and each of the first and second chambers.

13. The dust collecting unit of claim 8, further comprising a detachable cover adapted to cover an end of the first and third chambers.

14. The dust collecting unit of claim 13, wherein the cover has a centrally located air outlet hole.

15. The dust collecting unit of claim 14, wherein a filter is attached to the air outlet of the cover, and is positioned within the first chamber.

16. The dust collecting unit of claim 8, further comprising a hinged cover adapted to cover an end of the second and third chambers, and hinged to the dust collecting unit.

17. The dust collecting unit of claim 8, wherein the first chamber has a tangential air inlet hole.

18. The dust collecting unit of claim 8, wherein the third chamber extends the stacked full height of both the first and second chambers.

19. A dust collect unit for a vacuum cleaning, comprising:

a first barrier positioned between a dust separating chamber and a main dust collecting chamber so that the dust separating chamber and the main dust collecting chamber are on opposite sides of the first barrier;

a second barrier positioned between an auxiliary dust collecting chamber and both the dust separating chamber and the main dust collecting chamber so that the auxiliary dust collecting chamber is on a side of the second barrier opposite from a side of the second barrier with both the dust separating chamber and the main dust collecting chamber.

20. The dust collecting unit of claim 19, wherein the first barrier and the second barrier contact at a curved line.

21. The dust collecting unit of claim 20, wherein a curved peripheral edge of the first barrier is positioned perpendicularly on a curved surface of the second barrier.

22. The dust collecting unit of claim 19, wherein a communication hole is formed in the first barrier.

23. The dust collecting unit of claim 19, wherein a first communication hole is formed in the second barrier for communication between the dust separating chamber and the auxiliary dust collecting chamber, and a second communication hole is formed in the second barrier for communication between the main dust collecting chamber and the auxiliary dust collecting chamber.